Table 2 contains only Type III material, Type III has no facer so the whole line in table 2 which deals with the water vapor permeance for facers can be deleted
It was discussed during the C 1126 Washington task group meeting in October 2023 It was decided to take out the Note I of table 2 to and also to delete the whole line in table 2 this line deals with the water vapor permeance , Type 3 materials has no facer
Water vapor permeance, perms, (facer only) grains/h·ft2·in.·Hg
(ng/s·m2·Pa)
Date Initiated: 01-28-2024
Technical Contact: Bart Hinten